@MAHER said in Problem with n64 Rom:
Is there a way to resolve this issue?
AFAICT, only by installing the upstream libretro core ?
Can I manually install the core I need?
You can modify the scriptmodule for lr-parallel64 to get the sources from the libretro repository and try installing it from source. There's no guarantee that installation will work or that the core will run on an ARM device with reasonable performance.
I'm still unsure about what you mean when you refer to the "fork."
fork in this context means copy. RetroPie installs an older (and probably ARM optimized) copy of the Parallel 64 core.